How to show min value

Kira_090120 

:Caveat:

Since you did not share data with us therefore I've used a sample data, will help you to find month & year wise lowest (minimum) value. 

How it works:

• Enter 01/01/2020 in cell N16 & 02/01/2020 in cell O16 and 01/01/2020 in cell R16.
• Apply mmm, yy cell format on N16:O16 and yyyy on cell R16.
• To get unique item an array (CSE) Formula in cell M17: 

{=IFERROR(INDEX($O$2:$O$13,MATCH(0,COUNTIF($M$16:M16,$O$2:$O$13),0)),"")}

Finish the formula with Ctrl+Shift+Enter & fill it down.

• An array (CSE) Formula in cell N17 to get minimum values:

{=IF(MIN(IF(MONTH($N$2:$N$13)=MONTH(N$16),IF($O$2:$O$13=$M17,$P$2:$P$13)))=0,"",MIN(IF(MONTH($N$2:$N$13)=MONTH(N$16),IF($O$2:$O$13=$M17,$P$2:$P$13))))}

Finish the formula with Ctrl+Shift+Enter & fill it across.

• Get Unique list in cell Q17:Q19 ( use formula as shown in cell M17 ). 
• CSE Formula in cell R17:

{=IF(MIN(IF(YEAR($N$2:$N$13)=YEAR(R$16),IF($O$2:$O$13=$Q17,$P$2:$P$13)))=0,"",MIN(IF(YEAR($N$2:$N$13)=YEAR(R$16),IF($O$2:$O$13=$Q17,$P$2:$P$13))))}

 Finish the formula with Ctrl+Shift+Enter & fill it down.

• You may use other aggregate functions also like MAX/AVERAGE.
• Adjust cell references in the formula as needed.